Chem. J. Chinese Universities

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Hydrothermal Synthesis and Structure Characterization of a 2D Coordination Polymer [Cu(ox)(4,4'-bpy)]n

REN Hong1, XU Jia-Ning2, YU Lian-Xiang2, YE Jun-Wei3, BI Ming-Hui1, ZHANG Ping2*, SONG Tian-You1*   

    1. Key Laboratory of Inorganic Synthesis and Preparative Chemistry,
    2. College of Chemistry,
    3. Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, Jilin University, Changchun 130012, China
  • Received:2006-10-28 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
  • Contact: ZHANG Ping

Abstract: A new polymer [Cu(ox)(4,4'-bpy)]n(1)(ox=C2O42-, 4,4'-bpy=4,4'-bipyridine) was hydrothermally synthesized and characterized via elemental analyses, IR spectrum and single crystal X-ray diffraction. The polymer crystallizes in a monoclinic system, space group Cm, a=1.1921(7) nm, b=1.153(7) nm, c=0.5155(4) nm, β=113.38(3)°, V=0.6291(7) nm3, Z=2. Cu atom in the title compound is in an octahedral geometry with four O atoms from two bis-chelating oxalate ligands in equatorial plane and two N atoms from the 4,4'-bpy ligands in the axial position. The crystal structure possesses infinite {Cu(ox)}n chains connected with each other by the bridging 4,4'-bpy ligands in a perpendicular manner, leading to a 2D layered network with rectangular grids. The layers stacking in a staggered fashion are further assembled by C4,4'-bpy—H…Oox hydrogen bonds and lead to a 3D supramolecular architecture.

Key words: Hydrothermal synthesis, Copper(Ⅱ) coordination polymer, Mixed-ligand, Layered structure, Supramolecular architecture

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